Abstract: We investigatad twice suspended matter of the sea wader of the Bohai Gull in different seasons from 1958 to 1962.About 600 rtrater samples were collected using a reversed water bottle(11.in volume).The samples were filtered,dried and weighted separately:The eantent of the suspended matter was calculated by mg/1,and horizontal and vertical distribution figures of concentration ware plotted.Pacts of the samples were burned at 500℃ and the residues of noncombustible components were weighted again after the burning,and the weights lost would be the weights of organic matters.Other parts of the samples were identified by optical microscope.In addition,we analyzed chemical components of zhe suspended matter by spectrum.